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关于pytest:pytest学习和使用2初步使用和用例运行

1 测试脚本

  • pytest_study 文件夹下创立一个test_mm.py
# -*- coding:utf-8 -*-
# 作者:NoamaNelson
# 日期:2021/8/27 16:51
# 文件名称:test_mm.py
# 作用:xxx
# 分割:VX(NoamaNelson)
# 博客:https://blog.csdn.net/NoamaNelson

def m_sum(x):
    return x * (x+1)

def test_m_sum():
    assert m_sum(3) == 11
  • pytest_study 文件夹下关上 cmd 间接输出 pytest 运行:
(venv) F:\pytest_study>pytest
========================================================================= test session starts ==========================================================================
platform win32 -- Python 3.7.0, pytest-6.2.4, py-1.10.0, pluggy-0.13.1
rootdir: F:\pytest_study
plugins: allure-pytest-2.8.12, cov-2.8.1, forked-1.1.3, html-2.0.1, metadata-1.8.0, ordering-0.6, xdist-1.31.0
collected 1 item

test_mm.py F                                                                                                                                                      [100%]

=============================================================================== FAILURES ===============================================================================
______________________________________________________________________________ test_m_sum ______________________________________________________________________________

    def test_m_sum():
>       assert m_sum(3) == 11
E       assert 12 == 11
E        +  where 12 = m_sum(3)

test_mm.py:13: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_mm.py::test_m_sum - assert 12 == 11
========================================================================== 1 failed in 0.07s ===========================================================================
  • 发现执行失败了,是因为 12 不等于 11,assert是用来进行断言的。

2 脚本剖析

2.1 断言应用 assert

  • 从上边脚本看到断言的话应用 assert 即可,依据官网的说法是 pytest 断言根本都是用的assert

2.2 应用 pytest 运行用例规定

  • 文件名规定:
test_*.py 和 *_test.py 命名的函数
  • 函数名规定:
以 test_结尾的函数
  • 类的规定
test_结尾的办法,不能有__init__ 办法
  • python 包的规定
同 python 一样,包须要有__init__.py 文件
  • -q-quiet参数进行静默运行函数(说白了就是后果输入简单化)

3 练习下用例运行规定

  • 先在 pytest_study 目录下再新建一个 test_case 包;
  • 而后把之前写的第一个用例 test_mm.py 挪动到这个目录下:
  • 在 pytest_study 下执行 pytest, 发现是能够执行的,阐明是执行了 test_case 下的test_mm.py
(venv) F:\pytest_study>pytest
========================================================================= test session starts ==========================================================================
platform win32 -- Python 3.7.0, pytest-6.2.4, py-1.10.0, pluggy-0.13.1
rootdir: F:\pytest_study
plugins: allure-pytest-2.8.12, cov-2.8.1, forked-1.1.3, html-2.0.1, metadata-1.8.0, ordering-0.6, xdist-1.31.0
collected 1 item

test_case\test_mm.py F                                                                                                                                            [100%]

=============================================================================== FAILURES ===============================================================================
______________________________________________________________________________ test_m_sum ______________________________________________________________________________

    def test_m_sum():
>       assert m_sum(3) == 11
E       assert 12 == 11
E        +  where 12 = m_sum(3)

test_case\test_mm.py:13: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_case/test_mm.py::test_m_sum - assert 12 == 11
========================================================================== 1 failed in 0.13s ===========================================================================

(venv) F:\pytest_study>
  • 应用 -q 参数来执行下,一下子少了很多输入:
(venv) F:\pytest_study>pytest -q
F                                                                                                                                                                 [100%]
=============================================================================== FAILURES ===============================================================================
______________________________________________________________________________ test_m_sum ______________________________________________________________________________

    def test_m_sum():
>       assert m_sum(3) == 11
E       assert 12 == 11
E        +  where 12 = m_sum(3)

test_case\test_mm.py:13: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_case/test_mm.py::test_m_sum - assert 12 == 11
1 failed in 0.05s

(venv) F:\pytest_study>
  • 再在 test_case 下新建一个名为 test_a 的包,并在包里复制一个test_mm1.py
  • 从执行后果看是 ok 的,那么以上都证实了文件名、包名都须要以 test 结尾能力被执行;
(venv) F:\pytest_study>pytest -q
FF                                                                                                                                                                [100%]
=============================================================================== FAILURES ===============================================================================
______________________________________________________________________________ test_m_sum ______________________________________________________________________________

    def test_m_sum():
>       assert m_sum(3) == 11
E       assert 12 == 11
E        +  where 12 = m_sum(3)

test_case\test_mm.py:13: AssertionError
______________________________________________________________________________ test_m_sum ______________________________________________________________________________

    def test_m_sum():
>       assert m_sum(3) == 11
E       assert 12 == 11
E        +  where 12 = m_sum(3)

test_case\test_a\test_mm1.py:13: AssertionError
======================================================================= short test summary info ========================================================================
FAILED test_case/test_mm.py::test_m_sum - assert 12 == 11
FAILED test_case/test_a/test_mm1.py::test_m_sum - assert 12 == 11
2 failed in 0.20s

(venv) F:\pytest_study>
  • 咱们批改下 test_mm1.py 减少一个类,如下:
# -*- coding:utf-8 -*-
# 作者:NoamaNelson
# 日期:2021/8/27 16:51
# 文件名称:test_mm.py
# 作用:xxx
# 分割:VX(NoamaNelson)
# 博客:https://blog.csdn.net/NoamaNelson

import pytest


class TestClass:

    def test_you(self):
        y = "you"
        assert "y" in y

    def test_hai(self):
        h = "hai"
        assert "gg" not in h


if __name__ == '__main__':
    pytest.main()
  • 间接在 pytest_study 下执行pytest -q, 如下,阐明类也执行到了:
(venv) F:\pytest_study>pytest -q
...                                          [100%]
3 passed in 0.15s
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